Ni 
KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 23. x:o |2. 9 
GEORG WAHLENBERG. His »Petrificata telluris Suecanze» was printed already in 1818 
and distributed to his scientific friends before 1821, when it appeared in the collected 
volume of the »Acta Societ. Upsaliensis». At p. 89 he describes O. imbricatus, but as the 
original specimen is lost, there is now no possibility to apply his description to any dis- 
tinet form of the Cephalopoda, and it might be best not further to cite WAHLENBERG as 
author of the species, so long known as O. imbricatus of HisinGer. It is possible that 
WAHLENBERG really meant the same form: his description of O. angulatus, of the iden- 
tity of which there is no doubt at all, is also very inexact. Besides these both he also 
described O. crassiventris. 
GABRIEL MARKLIN, the indefatigable collector, named several Orthocerata, which he 
sent abroad in exchange for other fossils. In a paper by H. von MzryErR, »Beschreibung 
des Orthoceratites striolatus und iöber den Bau und das Vorkommen einiger vielkammeri- 
gen fossilen Cephalopoden» (in »Nova Acta Acad. Cees. Leop.» 1831 vol. 15,2 p. 93) is said: 
»Schweden ist bis jetzt das reichste Land an Orthoceratiten. Herr MARKLIN theilte mir 
folgende Species mit:') O. crispus MARKL. (undulatus His.), O. cochleoides MARKL., O. pyra- 
midalis MARKL., O. inflecus MARKL., O. striatus MARKL.> Through researches in the Mark- 
linian collection at Upsala I have found, that of these O. pyramidalis is a Lower Silurian 
species; there are no specimens preserved of the two following, nor of O. cochleoi- 
des. Instead we have in his collection some other species, as O. columnare MKL., which 
have been adopted by Borr and others. O. intermedium MKL., as described and figured 
by BARRANDE, is not identical with the specimens so named by MARKLIN in his museum. 
These are the same which were later called O. Hagenowi by Borr. As MARKLIN never 
published his species, his name as an author of O. intermedium, which in reality belongs 
to BARRANDE, must be cancelled. 
ANGELIN, N. P. in a collection of type specimens edited in 1838 and called »Mu- 
seum palzeontologicum suecicum» has only »Orthocera cochleata SCHLOTH. 
In »Fragmenta Silurica» published 1880 there are the following nine species de- 
seribed and figured, viz: 
Orthoceras cochleatum SCHLOTH. 
> nummularium Sow. 
lamellatum ANG. 
Hagenowi Boi. 
» intermedium (as of MARKLIN but in reality of BARR.) 
» columnare MARKL. 
» asserculatum ÅNG. 
» tesselatum ÅNG. 
Ophidioceras reticulatum ANG. 
SIR RODERICK MURCHISON during his tour in Gotland together with E. DE VERNRUIL 
collected fossils and gave a list of them in the paper, which he in 1847 published in the 
1) T have only cited the names of MARKLIN'S own species, not those of older authors. 
K. Sv. Vet. Akad. Handl. Band 23. N:o 12. 2 
